Merge pull request #54 from bmf-san/fix/remove-unnecessary-director

Fix remove original director

proxy.go

@@ -59,12 +59,12 @@ func newServer(c *Config) (*http.Server, error) {
 			return nil, fmt.Errorf("error parsing upstream address: %w", err)
 		}
 
-		proxy := httputil.NewSingleHostReverseProxy(pp)
-		proxy.Transport = NewLogRoundTripper(http.DefaultTransport)
-		originalDirector := proxy.Director
-		proxy.Director = func(r *http.Request) {
-			originalDirector(r)
-			r.Header.Set("X-Trace-ID", GetTraceID(r.Context()))
+		proxy := &httputil.ReverseProxy{
+			Transport: NewLogRoundTripper(http.DefaultTransport),
+			Director: func(r *http.Request) {
+				r.Header.Set("X-Trace-ID", GetTraceID(r.Context()))
+				r.URL = pp
+			},
 		}
 		ph := &ProxyHandler{proxy: proxy}
 		mux.HandleFunc(b.HostName+"/", ph.Handler)